In my previous blog post, I noted that reliability and validity are two essential properties of psychological measurement. Measures of intelligence, personality, vocational interests, and so forth ...

There is a distinction that one learns about on the first day of a course in psychological research methods. It is the difference between internal and external validity. Internal validity is ...

Science has provided an increasingly clear picture of the inherent limits in human visual perception and memory that can lead to errors in eyewitness identification. While the law enforcement ...